Audemars Piguet 26759CS.OO.1225CS.01, Royal Oak Perpetual Calendar in blue ceramic with a blue Grande Tapisserie dial. This model brings advanced materials and full calendar functionality into a striking Royal Oak execution. The 41 mm blue ceramic case gives the watch a modern, technical look while remaining durable and lightweight on the wrist. The matching blue Grande Tapisserie dial offers rich texture and depth, keeping the overall design cohesive. The perpetual calendar displays day, date, month, leap year and moon phase with clarity and balance, automatically accounting for varying month lengths and leap years without adjustment until 2100. Applied white gold hour markers and hands provide strong legibility against the deep blue backdrop. Inside beats Audemars Piguet’s in-house automatic perpetual calendar movement, engineered for reliable performance and a robust power reserve, with high-end finishing visible through the sapphire caseback. The integrated ceramic bracelet continues the material story while offering comfort and a bold, contemporary presence. The 26759CS.OO.1225CS.01 Royal Oak Perpetual Calendar pairs innovative materials, sophisticated complications and iconic design, making it a standout choice for someone who values technical excellence and modern luxury in a luxury sports watch.